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Has anyone heard of using Epson salt as an additiv...
Fruitgroweranswered grow question 5 years ago
Yes, I do mix a little in with my soil mix as it contains many minerals like calcium and magnesium.
motaman311answered grow question 5 years ago
I do!!! Not nearly as much as some other growers do and I run a hydro/DWC setup so nutrient availability is a little different than soil. It is magnesium and sulphur, so if you need those elements, you should add it. I use 15-25 PPMs, or I know this isn't the correct measurement because it should be weight, but I do .5ml per gallon or 1/2 teaspoon in 5 gallons and 1 tsp for my 10 gallon reservoirs. I had my water tested and it runs about 15-20 PPMs of Calcium and very little magnesium (1-3) so i use it to balance my water out and give them a little extra magnesium. Extra magnesium could come with issues, locking out calcium, so like everything you add to your feed, you need a balance.
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